Merge branch 'mneta-page_pool_get_stats'

Lorenzo Bianconi says:

====================
net: mvneta: add support for page_pool_get_stats

Introduce page_pool stats ethtool APIs in order to avoid driver duplicated
code.

Changes since v4:
- rebase on top of net-next

Changes since v3:
- get rid of wrong for loop in page_pool_ethtool_stats_get()
- add API stubs when page_pool_stats are not compiled in

Changes since v2:
- remove enum list of page_pool stats in page_pool.h
- remove leftover change in mvneta.c for ethtool_stats array allocation

Changes since v1:
- move stats accounting to page_pool code
- move stats string management to page_pool code
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index ea5fb70e5101..813c93499f20 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -117,6 +117,10 @@ struct page_pool_stats {
 	struct page_pool_recycle_stats recycle_stats;
 };
 
+int page_pool_ethtool_stats_get_count(void);
+u8 *page_pool_ethtool_stats_get_strings(u8 *data);
+u64 *page_pool_ethtool_stats_get(u64 *data, void *stats);
+
 /*
  * Drivers that wish to harvest page pool stats and report them to users
  * (perhaps via ethtool, debugfs, or another mechanism) can allocate a
@@ -124,6 +128,23 @@ struct page_pool_stats {
  */
 bool page_pool_get_stats(struct page_pool *pool,
 			 struct page_pool_stats *stats);
+#else
+
+static inline int page_pool_ethtool_stats_get_count(void)
+{
+	return 0;
+}
+
+static inline u8 *page_pool_ethtool_stats_get_strings(u8 *data)
+{
+	return data;
+}
+
+static inline u64 *page_pool_ethtool_stats_get(u64 *data, void *stats)
+{
+	return data;
+}
+
 #endif
 
 struct page_pool {